5. Troubleshooting
fuse T4A
Control lamp off.
If the light is off, check the power sup-
ply of the controller..
o.k.no
The fuse of the controller is defective.
This fuse can be replaced when the co-
ver and the terminal cover are removed
(spare fuse is enclosed in accessory
bag).
Control lamp flashes red
Sensor defect. An error code instead
of a temperature is displayed in the
sensor display channel.
- 888.8888.8
Cable broken.
Check cable.
Short circuit.
Check cable.
Disconnected Pt1000 temperature sen-
sors can be checked with an ohmeter.
In the following table, the resistance
values with the corresponding tempe-
ratures are shown.
resistance of the
Pt1000 sensors
spare fuse T4A
In the case of an error, a message is shown on the
display of the controller:
operating
control lamp
115
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